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BQ27520YZFR-G4 The Texas Instruments BQ27520YZFR-G4 is a system-side fuel gauge IC for single-cell Lithium Ion batteries. It utilizes the Impedance Track algorithm for accurate state-of-charge monitoring.
Mfr Part #:

BQ27520YZFR-G4

Available from 6 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments BQ27520YZFR-G4 is a system-side fuel gauge IC for single-cell Lithium Ion batteries. It utilizes the Impedance Track algorithm for accurate state-of-charge monitoring.
✓ Total Stock: 122,476 pcs
$ Price Range: $2.18

BQ27520YZFR-G4 Available from 6 distributors

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✓ Non-Authorised
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BQ27520YZFR-G4 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Features
Function
Interface
Mounting Type
Number of Cells
Operating Temperature
Supplier Device Package
Supplier Package
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BQ27520YZFR-G4 Description

Short technical summary and product information.

The BQ27520YZFR-G4 from Texas Instruments is a system-side fuel gauge IC designed for single-cell Lithium Ion and Li-Polymer batteries. It features the patented Impedance Track technology, which accurately reports remaining capacity, state-of-charge (SOC), and time-to-empty by adjusting for battery aging, self-discharge, temperature, and rate changes.

 

This IC supports a battery capacity range from 100 mAh to 32000 mAh and operates over a temperature range of -40°C to 85°C. It communicates via a 400-kHz I²C interface and includes an integrated 2.5 VDC LDO. The package is a compact 15-pin DSBGA (YZF).

 

Key features include battery state-of-health estimation, support for embedded or removable packs, and configurable SOC interrupts. The device also includes an external low-value 10-mΩ sense resistor and options for temperature sensing via an external thermistor, internal sensor, or host-reported values.

BQ27520YZFR-G4 Quick Information

Product Type: Battery Fuel Gauge IC
Series: BQ27520
Canonical Name: BQ27520YZFR-G4 System-Side Impedance Track Fuel Gauge With Integrated LDO
Subcategory: Power Management ICs

BQ27520YZFR-G4 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BQ27520YZFR-G4 Estimated Pricing

Qty Low High
1+ $2.18 $2.18

Estimated market price range - modelled values for guidance only, not live distributor offers.

BQ27520YZFR-G4 Features

  • System-side fuel gauge for Li-Ion batteries.
  • Impedance Track algorithm for accurate SOC.
  • Supports single-cell configurations.
  • Compact 15-pin DSBGA package.
  • Operates from -40°C to 85°C.

BQ27520YZFR-G4 Applications

  • Accurate battery monitoring in portable devices.
  • Enables state-of-health estimation.
  • Suitable for embedded or removable packs.
  • Used in systems requiring precise fuel gauging.

BQ27520YZFR-G4 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating temperature range for the BQ27520YZFR-G4?

The operating temperature range is -40°C to 85°C.

What communication interface does the BQ27520YZFR-G4 use?

It uses an I2C interface.

How many battery cells does the BQ27520YZFR-G4 support?

It supports a single cell.

What battery chemistry is compatible with the BQ27520YZFR-G4?

It is designed for Lithium Ion batteries.

What is the function of the BQ27520YZFR-G4?

Its function is battery monitoring.

What is the minimum battery capacity supported by the BQ27520YZFR-G4?

The minimum supported capacity is 100 mAh.

What is the maximum battery capacity supported by the BQ27520YZFR-G4?

The maximum supported capacity is 32000 mAh.

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